My eyesight is not all that good—I’ve worn glasses since I was in fifth form. I actually use two different glasses (both bifocals). One is for general use: the top portion is for distance use—driving, watching movies, recognizing people, etc. and the bottom part is for reading.
My second pair I use in the office and when online: the top part of my glasses is for computer use (really the middle part of a tri-focal prescription) and the bottom half is for reading.